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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '59b145693a06c31b91a6b6a7ebc6eaf7f91931e58ba2b01ce88b78963a310f8e' 
  AND token = 'XzY3+e4+IWTTl/2SaWmJunxfJMLWYASMlQ5MxUaY+XA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00013

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}